Padlock



Oct. 23, 1934. E, E,l STONE' l 1,978,391

PADLOCK Filed March 50, 1.954

Patented ct. 23, 1934 PATsurv rADLocK. n

l Elmer B. Stone. Newritain, Conn., assigner to 'The Americanv Hardware Corporation, New 'i3 Britain, Conn., a. corporation of Connecticut application March so,f19s4.fser'ia1 No." '118,258

s claims. (01..':0-108) g My invention; relates more particularly to the class of locks above mentioned, and an object of` the invention, among others,` is the production of a lock of this type thatshall be durable in'` `construction and` particularly eicientv for the purpose for which it is designed. i

`One 'form' ofv a padlock' embodying my tion and in the construction and use of which the objects herein set out, as well as others, may be attained,` is illustrated in the accompanying drawing in which` Figure 1 is a side view of my improved lock.

Figure 2 is an end view of the same.

Figure 3 is a side view with parts,j.includingv H26 the mounting for a lockingbolt.

Figure 8` is an isometric view of` the key'pliig.t

Figure 9 is azfragmentary view showing the application of my invention to the so-call'ed dead bolt type of lock.- 4

430 1 In the accompanying drawing the numeral 10 denotes the case of my improved padlock that may be composed of anysuitable material with an opening iorthe long -arm 11 of, the shackle and an opening on the opposite side of the case for the short arm for leg 12 of Vthe shackle, the i long arm or leg 11 being provided with any suitable means for preventing its removal from the case and also being provided with any suitable means for forcing it outwardly to unlocking position in a manner common to padlocks as heretofore constructed. The short leg of the shackle has a notch 13 to receive a locking bolt to be hereinafter described.

A key plug 14 is rotatably mounted in the case, A,4.5 its rotating movement being effected as by means of a key inserted in a key slot extending length- -Wise within the plug as is common in structures of this type, rotation of the plug being controlled in any suitable manner, as by means of leaf or 50 pin tumblers or the like, such tumblers not being 5 5 of from the inner end thereof, as shown in Fig.

Figure 6 is a*hviewpartially` ,broken away tov 7 of the Ldrawing. A bolt 16 is pivotally mountedwithinsaid notch, said bolt having. a locking nose 17 on one side to engage within the notch 13 in the short leg of the shackle, anda spring engaging lip 18 on the opposite side to receive one endr of a spring 19 which thrusts at one end against the bottom of the recess andat its opposite end against thelip 18, as vshown in Fig. 3 of. the drawing. .,-The plug 14 is out away at its inner end, as at 20, `to permit it tobe turned to avoid the end of the shackle when thelatter is in its locked position, as shown in Fig. 6.

Theend of the short leg 12 ofthe shackle is beveled onione side and the upper side of the nose 17 is also beveled so thatvwh'en the shackle is pushed into the case yin a locking movement engagement of said beveled surfaces will cause the bolt 16 to be swung backwardly to permit the entrance of said shackle arm, `and when the lip 21 formed by the notch has passed the nose 17 the lockingboltwill spring into locking position to retain the shackle from unlocking movement. To release the shackle a key is` inserted in the key groove 22 in the plug to place the tumblersin releasing positions, and the plug .being then turned by means oi the key the nose 17 is passed laterally from engagement with the lip 2l, and the shackle, by reason of: the Spring engaging the long `leg, -as in a manner common to padlocks of this type and hereinbefore described, isforced outwardly to unlocking position, and as shown in Fig. 4 of the drawing. f

The plug may be heldin place in the case as by means fof a key 23 extending into a notch inthe side of the'plug, as shownin Fig. 3, said key being securedfas by` means off a screw 24 in a threaded holewhich opens intothe notch in which the key is located, said notch openingv from the plug socket in the case. The screw is located in line with the hole that receives the short leg of the g5 shackle so that said screw may be manipulated as by means of a screw-driver extended into said hole.

The pivot 25 for the bolt 16 may be extended laterally from the bolt into a pivot notch 26 cut 100 into the front side of the plug, and as shown in Fig. 8. The pivot is loosely retained in said notch, but the action of the spring 19 is such that the bolt is retained in place when the plug is out of the case, and the wall of the hole in which the plug is located retains the bolt in place when the parts areassembled. A spring 27 surrounding the plug 14 with one end attached tothe plug and the other end engaged within a groove in the wall of the plug opening in the case may be employed to return the plug to locking position after it has been rotated therefrom.

In Fig. 9 I have shown my invention as applied to the so-called dead bolt type of lock, that is a lock in which the shackle cannot be engaged with the bolt until the latter has been removed from the path of the former as by rotation of the key plug. This structure is the same as that hereinbefore described with the exception that the lip 28 on the short leg of the shackle is unbevelled as is also the nose 29 on the bolt 16, so that said lip cannot be forced past said nose by pushing the latter back, and the plug 14 must therefore be turned to eiect a locking operation.

In accordance with the provisions of the patent statutes I have described the'principles of operation of my invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim:

1. A padlock including a case, a shackle movably mounted in the case and having a short leg to project into the case, said leg-having a locking lip, a plug rotatably mounted in the case, and a locking bolt mounted on a horizontally arranged pivot carried by said plug to swing in a vertical plane to engage said locking bolt.

2. A padlock including a case, a shackle movably mounted in the case and having a short leg to project into said case, said leg having a locking lip, a key plug rotatably mounted in the case, and having a narrow recess opening inwardly from one end of the plug from one side thereof, and a locking bolt mounted on a horizontal pivot extending across said recess near the bottom thereof to swing in a vertical plane to engage said lip.

3. A padlock including a case, a shackle movably mounted in the case and having a short leg to project into said case, said leg having a locking lip, a key plug rotatably mounted in the case, and a locking bolt pivotally mounted at its lower end in a recess in the inner end of said plug, said bolt having a locking nose at its upper end to engage said short leg of the shackle and also having a spring engaging lip projecting from the side opposite said locking nose, and a spring engaged with said lip.

4. A padlock including a case, a shackle movably mounted in the case and having a short leg to extend into the case, said leg having a locking lip, a plug rotatably mounted in the case, and a locking bolt pivotally carried by said plug to swing in a vertical plane and having a laterally extending locking' nose arranged on said plug to engage with and disengage from said locking lip during the rotary movement of said nose with said plug.

5. A padlock including a case, a shackle movably mounted in the case and having a short leg to project into said case, said leg having a locking lip, a plug rotatably mounted in the case and having a recessed notch in its inner end, a locking bolt pivotally mounted at its lower end near the bottom of said notch and having a locking nose projecting from one side at its upper end and a spring engaging lip projecting in the opposite direction from said nose, and a spring seated against the bottom of said notch to press with its upper end against said lip to thrust said nose into engagement with said locking lip on the short arm of the shackle.

6. A padlock including a case, a shackle movlably mounted in the case and having a short leg to project into said case, said leg having a locking lip, a plug rotatably mounted in the case and having a recessed notch in its inner end, a locking bolt pivotally mounted at its lower end near the bottom of said notch and having a locking nose projecting from one side at its upper end and a spring engaging lip projecting in an opposite direction from said nose, said plug being cut away on one side to avoid the end of said short arm as the plug is rotated, and a spring seated against the bottom of said notch and pressing with its upper end against said lip to thrust said nose into engagement with said locking lip on said short arm.

7. A padlock including a case having a vertically extending hole for the short arm of a shackle, a shackle movably mounted in the case and having a short arm to extend into said hole, a plug rotatably mounted in the case, a locking bolt mounted on said plug to engage a locking lip on the short arm of said shackle, and a pivot extending laterally from said boltinto a notch cut into said plug from -the outer side thereof for the reception of said pivot.

8. A padlock including a case, a shackle movably mounted in the case and having a short leg to project into said case and having a locking lip, a key plug rotatably mounted in the case and having a recess opening inwardly from its inner end and a notch cutting across and intersecting said recess, and a locking-bolt mounted in said recess and having a pivot extending laterally therefrom and engaged in said notch, said bolt having a nose to engage said locking lip on the short leg of the shackle.

ELMER B. STONE.

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